Housing
What size is your tank? 1 gallon mini bow, buying 2.5 or 5 tomorrow.
What temperature is your tank?75-82
Does your tank have a filter?yes
Does your tank have an air stone or other type of aeration?no
Is your tank heated?the light heats it but I want one
What tank mates does your betta fish live with?
just him(sonic)
Food
What type of food do you feed your betta fish?Not sure but it's flakes and color enhancing
How often do you feed your betta fish?
2 times a day, 3-5 flakes and random bloodworms now an then, one or two
Maintenance
How often do you perform a water change?Once a week about 80%
What percentage of the water do you change when you perform a water change?
What type of additives do you add to the water when you perform a water change?Conditioner and ph decrease cause the tap water is at 8 so I make it about 7.6 usually

Water Parameters:
Have you tested your water? If so, what are the following parameters?

Ammonia:0 or very low
Nitrite:
Nitrate:0
pH:7.6
Hardness:
Alkalinity:

Symptoms and Treatment
How has your betta fish's appearance changed?Yes
How has your betta fish's behavior changed?he was acting odd for a week then I baffled filter and he was okay again
When did you start noticing the symptoms?2 days ago
Have you started treating your fish? If so, how?
Does your fish have any history of being ill?no
How old is your fish (approximately)?bought a month ago, probably close to a year now

His color was always an electric blue, with a green teal in it also, some red in fins, his chin area under his face was turning silver now the green is turning into a gold tint and I don't know if it's normal color for him or not. He makes bubble nests, eats good and seems fine. The one thing is his eye color was a dark yellow and now he has parts of eye color changing into the same blue as his scales. I have pics but I gotta upload them on my comp at home later

Your description is your betta is showing signs of stress, which is expected given this info.

Using a light to heat the tank isn't an okay method. It creates temperature swings, as your wide 7 degree range indicates and these swings are very hard on bettas. They can even be lethal.

Bettas are tropical fish and must be kept at a temp between 76-82, with 78-80 being ideal. The temp must be stable and not be dipping or jumping around. In a 2 gallon you can get an adjustable 25w heater. Any new heater should be tested for 24 hours in similar size container with in tank thermometer to make sure it will hold a constant appropriate temp between 78-80F. Then the betta must be acclimated to higher temp either by floating in a cup inside the main already fully heated tank for an hour, or by adjusting the heater to increase the temperature of the tank no more than a degree per hour and 5 degrees per day.

Also messing with the ph is the same. Bettas can adapt to a wide variety of ph, but these swings can also be lethal. 8 ph is fine. It's really important that you stop messing with it.

You are also not doing enough water changes, and it is pointless to keep a filter in something of this size because it's not enough surface area to ever establish a biofilter and your boy can't get out of the current.

I would remove the filter. Then I would increase water changes to three times a week in the 1g 50%, 50% and 100% by week's end. In the 2g if you get it you can decrease to twice weekly 50% and 100%. The 5g will require weekly 100%, but I actually suggest doing some kind of mid week change as well.

The 50% changes the betta can be kept in the bowl and use a turkey baster to remove half the water and as much of the debris as possible. For the 100% you need to remove him - scoop him out with a plastic solo type cup and set aside while you thoroughly rinse the bowl and gravel to remove the debris. Then he should be acclimated to the new water by floating for an hour while you slowly add a couple tablespoons of new water to the cup every 10 minutes. When you release him, try to let as little of the old cup water back into the tank as possible. All water changes should use same temp water, matched to running tap using the in tank thermometer and the water needs to be premixed with conditioner before adding it to the betta tank. If you don't already have anything, you can use gallon water jugs from the grocery store - rinsed thoroughly in hot water but no chems.

Flakes aren't good nutritional value, and especially with something this small they muck up the water quickly causing excess ammonia. You should look for a good quality pellets whose first two or three ingredients are whole fish, not fish meal or wheat. He should be fed two small meals a day (how many depends on the pellet you pick up) and one fast day a week.